Usage Tips: Upgrade: The water filter features an additional layer of rubber seal to help prevent unfiltered water from leaking. The filter housing is made of environmentally friendly, food-grade plastic and is BPA-free to support safe filtration. Multi-layer Filtration: Our water purifiers include a multi-layer filtration system that uses activated carbon and an ion exchange resin to help reduce odors. This filter contains 30% more ion exchange resin than many other brands (the visible yellow substance is the resin), which helps reduce TDS and remove calcium, magnesium, chlorine, and other ions from water. Note: Filtration performance may vary depending on water source and regional conditions. Protect the Environment: Each replacement filter can help filter up to 40 gallons of water, reducing the need for single-use plastic bottles and supporting environmental sustainability. Replacement Models: Compatible with Zero Water pitchers models ZR-001, ZR-003, ZR-004, ZR-006, ZR-008, ZR-012, ZR-017, ZR-600, ZP-007RP, ZD-013W, ZD-013D, ZR-0810G, ZR-0810-4, ZP-010, ZD-010RP, ZS-011RP, ZD-012RP, ZD-20RP, ZD-018, ZD-030RP, ZJ-003, ZJ-004S, ZP-006-4, ZBD-040-1. For optimal performance and best taste, replace the filter every month or when the filtered water begins to taste off, indicating the filter has reached capacity. Color: White Material: Plastic and Resin Package Contents: 1 x Water Filter Note: The package includes only the items listed above. Light reflection and screen settings may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3 cm.